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  • Lilly and Astellas Circle Sangamo Assets as the Biotech Files for Bankruptcy
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Lilly and Astellas Circle Sangamo Assets as the Biotech Files for Bankruptcy

Sangamo filed for Chapter 11 with Lilly and Astellas as stalking-horse bidders for its gene therapy assets, while Pfizer absorbed another Seagen-deal setback and the FDA reopened a path for Regenxbio.
pharminent June 23, 2026 (Last updated: June 23, 2026)

STRATEGIC NEWS WATCH — June 23, 2026

Sangamo Therapeutics filed for Chapter 11 bankruptcy and lined up Eli Lilly and Astellas as stalking-horse bidders for its gene therapy assets — the day’s sharpest signal that financing for clinical-stage gene therapy has thinned even as the science stays prized — while Pfizer absorbed another Seagen-deal setback and the FDA reopened a path for Regenxbio.

Today’s top developments:

  • Sangamo filed for Chapter 11 with Lilly and Astellas as stalking-horse bidders — Astellas for the Fabry gene therapy isaralgagene civaparvovec, Lilly for the delivery and zinc-finger platforms plus prion program ST-506 (BioSpace)
  • A Seagen-derived antibody-drug conjugate central to Pfizer’s $43 billion acquisition failed a Phase 3 lung cancer trial (Pharmaphorum)
  • The FDA cleared a path for Regenxbio’s gene therapy, with a BLA resubmission slated for Q3 2026 (Pharmaceutical Technology)
  • Gene-editing startup Serapha Bio launched with $230 million, a YolTech license, and a reverse merger into Boundless Bio (STAT)
  • Merck KGaA pledged $50 million to build a new cardiovascular biotech with Versant Ventures, eyeing a later acquisition (Fierce Biotech)

What to Watch

  • Sangamo bankruptcy auction: As court-supervised bidding proceeds, watch whether rivals top Lilly’s and Astellas’s stalking-horse offers and what becomes of unsold assets such as the hemophilia A gene therapy giroctocogene fitelparvovec — the outcome will reprice how distressed gene therapy portfolios are valued.
  • Pfizer ADC pipeline review: After the Phase 3 lung cancer failure of a key Seagen-derived ADC, watch for any formal pipeline reassessment or investor guidance update, particularly on remaining ADC candidates and the return narrative for the $43 billion deal.
  • Regenxbio BLA resubmission: With a July FDA meeting and a Q3 2026 resubmission on the calendar, signals on data requirements or label negotiations will indicate whether the gene therapy can reach market in 2027.
  • Serapha Bio’s China exposure: The startup’s YolTech licensing deal warrants monitoring as US lawmakers continue scrutinizing China-linked biotech transactions; any CFIUS or legislative activity could reshape the deal structure.
  • HHS clinical-trial strategy: The plan to restore US trial leadership is, for now, a policy document; watch for concrete mechanisms — FDA site-approval streamlining or NIH infrastructure funding — that would signal genuine execution.

This brief highlights the edition’s top stories. Read the latest edition → for all stories and analysis.

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